Means for filtering gasoline



H. A. DEEKS. MEANS FOR FILTERING GASOLINE.

APPLICATION FILED JAN- 31, I920.

gamma Aug. 29, 19223.

I A .w A n 5 E5 1 a c MEANS FOR FILT'EHING GASOLINE.

amas.

Specification of letters Patent.

Patented Aug. 2%, 1922.

Application filed January 31, 1920. Serial No. 355,492.

T 0 all whom it may concern:

Be it known that l, HUGH A. Dunne, a a subject of the King of Great Britain, residing at i l loose Jaw, Province of Saskatchewan, Dominion of Canada, have invented certain new and useful improvements in Means for Filtering Gasoline, of which the following is a specification.

This invention relates to improvements in means for filtering gasoline, pertaining more particularly to devices interposed between a gasoline storage tank and the point of use, such for instance as a carburetor of a motor vehicle, the means thus acting as an auto matic cleansing device capable of supplying the carburetor with clean fuel.

While many and varied attempts have been made to produce this result, these attempts have been more or less unsatisfactory. For instance, structures capable of good filtering action have been more or less difficult to cleanse from the impurities, re-

quiring complete disassembly of parts and the use of expert labor in restoring the filter to satisfactory working condition; furthermore, the time and labor required in providing this result are such as to produce a serious factor in the use of devices of this type, it being necessary to place the motor vehicle out of service for considerable periods owing to the necessity of securing such expert assistance. Other types provide inefiicient cleansing action on the gasoline con tent, while in some cases, the arrangements are such as to produce rapid clogging of the filtering structure, thus necessitating frequent cleansing. Owing to the fact that these diificulties are of lesser degree than those produced by employing an uncleansed gasoline in the motor, these devices have been employed in spite of their disadvantogeous formations.

The present invention is designed to meet these different conditions by producing a construction which is eiiicient in the cleansing of the gasoline content, which is so arranged as to provide the filtering action with a minimum amount of clogging possibility, and in which the filtering structure is so arranged as'to permit of ready removal and cleansing without requiring skilled labor in producing the result, the structure having fool-proof characteristics which enable an unskilled workman to take down and re-assemble the structure without liability of error.

Other objects are to provide means for the purpose which are simple and efiicient in operation, durable in construction, and which can be manufactured and installed at a relatively low cost.

To these and other ends, therefore, the nature of which will be readily understood as the invention is hereinafter disclosed, said invention consists in the improved construction and combination of parts hereinafter fully described, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims.

in the accompanying drawings, in which similar reference characters indicate similar parts in each of the views,--

Figure l is a vertical sectional view taken centrally through a device forming one embodiment of the general invention.

I Fig. 2 is a rear elevation of the samethe view looking toward the outlet end of the device.

Fig. 3 is a view, partly in section and partly in elevation, showing the removable unit of the device.

Fig. 4 is a fragmentary sectional view of the filter unit.

The means preferably employed in carrying outthe general priciples of the present invention, is in the form of two connected elements a and 1), these, in assembled relation completing the filter structure, removal of element 6 bodily, as a unit, exposing the interior of element wand renderingaccessible the filtering unit, indicated generally at c.

Element 0; is the form of casing 10 having an open side, the casing being preferably approximately cylindrical in form with respect to its open side, the axis of the cylinder being inclined to the horizontal under service conditions, the inclination being approximately equal to an angle of. 22; this places the plane of the open side of equal angularity to the vertical, and since the closedv end of the element is formed by a side 10 which extends substantially vertically when the device is properly mounted, it will be understood that the two planes correspond ing to the opposite ends of this cylindrical portion are inclined relatively to each other. As a result, the cup-shaped interior of element a is of greater depth at its lower portion-the wall joining the cylindrical and end walls being preferably curved as shown-this portion forming a pocket for all sediment collections, since the walls of the cylindrical portion incline upwardly relatively to the bottom of the pocket. A

suitable plug valve or cock 11 is located at such lower pocket end, permitting ready removal of the collections.

12 designates a connection nipple or other suitable form of connecting element by means of which the device can be connected up within the gasoline line of the motor vehicle, nipple 12 being preferably connected to the feedj linefrom the-storage tank and opening intothe interior of the casing adj acent its top.

The casingi's-mounted in suitable manner on the motor vehicle, a preferred arrangement being by-the use of a flat securing member 13, threaded to the upper end of the casing, and locked in position by a lock nut 13 this arrangement permittingthe casing to beaccommodated relative to a convenient part of the vehiclesuch part itself extending in avertical pl'ane-so that wall 10 will extend substantially vertical when in position.

Element 6 is a removable element which forms a closure for the openend of the easing. Element b'includes'a plate-like member 14 and in annular flange 14, the latter carrying external threads 14? which are adapted to be threaded to complemental internal threads at .theopen end of the casing. Flange 14 extends inwardly into the casing a distance beyond the threaded connection, and hasits innerend internally threaded, as at 14 in advance of an annular shoulder 14 said shoulder forming a seat for the filter unit, presently described, the unit-being-held to its seat by an annular threaded clamping member 15 which cooperates with threads 14E and: which may be provided with depressions 15 to facilitate threading anda unthreading movements.

1 Member 14 carries the discharge nipple 16, the latter being connected up to the line leading to theoarburetor-or to the vacuum tank, if the filter is.employedin such service.

The filter unit 0'a portion of which is shown in Fig. 4: on enlarged scalecomprises; an annular member 17 preferably of metal, and'somewhat conical in section diametrically, oneend being formed with an outwardly projecting flange 17 adapted to seat onshoulder 14 the opposite end being preferably provided with a shoulder or other formation, indicated'at 17 the particular shape of this part 17 being illustrative of different. shapes which may be employed.

The filter is in theform of two spacedapart. filtering mediums. 18 designates the advance-medium, this being in theform of wire gauze of fine mesh secured in suitable manner tothe face of, flange 17"; if desired, the member 18 maybe soldered or brazed to the flange, it; being desired that this memher be not separated from member 17 when the parts are removed for cleaning.

The second filter medium is preferably in the form of av multi-ply construction which includes a layer of chamois 19 and a fabric layer of different material and indicatedat 20; the material I prefer to employ is silk although other materials having similar characteristics to silk in the smoothness of texture, may be employed.

The two layers overlie the opposite end of member 17 and extend over the configuration 17, being held in position by a suitable retainer, such as wire 21' which 'co operates with shoulder 17 in retaining the multi-ply structure in proper position.

, As will be understood, member 17 and the parts carried thereby are heldin position by the clamping action of member 15, removal of the latter permitting the unit 0 to drop out of the cover element 6. And'when unit 0 is released, it is necessary only to re move the holding means 21 to permit the multi-ply formation to be removed for cleansing, leaving medium 18 exposed on its opposite sides, and opening the'interior of member 17' to free cleaning action. It is necessary only to replace the plies 19 and 20 and secure them with the retaining member 21-an operation requiring no skilled labor-thus completing unit 0," then inserting unit c'into position in member 14-,

and threading" member '15, to position, completing unit b-both operations being'had while member 14 is separate from the casing and therefore readily handled; after which unit-t is insertedintothe casing and threaded to position, thus completing the device.

I prefer to employ a ply in addition to the chamois ply 10, for the reason that all chamois has a more'or less rough surface, so that anysediment which would pass through the screen 18' into contact with the second filter would, if chamois alone were to be employed, be likely to adhere to the surface of the chamois. To obviate thisl employ the second layer of fabric 20,.this being placed in position in advanceof the chamois layer, so that the fabric layer forms a protecting shield for the chamois layer,

and at'the same timepermits free access to This ability of the filter unit to shed the sediment is not only produced by the use of the smooth fabric material, but b reason of the angularity of the filtering surfaces to the vertical, the lines of divergence from the vertical increasing from thenaevnee upper end of the receiving chamber-the casing interior-toward the bottom of the chamber formed by the enlarged pocket. As a result, the sediment intercepted by the two filter surfaces can move by gravity away from a lower portion of the surface and toward the poclreteither the main pocket adjacent the drain outlet, or the lower portion of the space between the filter surfaces so that there is a constant tendency of the surfaces to cleanse themselves from the collected sediment, leaving a large and free surface exposure to the surfaces. And the same is true with the collection of water which may be provided by the action of the chamois ply, this collecting at the bottom of the space between the surfaces, and since the flange 17 is approximately equal to the thickness of member 15, it will be understood that the collected water will simply pass through the screen 18 into the main pocket adjacent the draining valve through which it can be drained at intervals.

As will be understood, it is only necessary to disconnect nipple 16 from the out et line -a suitable union may be employed to permit of this being readily donewhereupon unit Z) can be bodily removed, thus exposing the entire interior of the casing to permit thorough cleansing of the casing and units Z) and c, the casing remaining undisturbed.

And since unit Z) is secured in position by threading action, no particular care is required in restoring the units to position, thus making it unnecessary to employ skilled labor to produce the cleansing operation. And since all filtering surfaces are removed with the removal. of unit I) and then of unit cth'e removal of the two-ply formation giving access to opposite sides of the secured surface 18the entire structure is capable of being thoroughly cleansed in a most convenient manner.

As will be understood that arrangement employs but few parts having configurations which can be produced in a simple manner, and all of which are of such character as to practically elminate liability of loss of parts during the disassembled period. This permits of a comparatively low cost of production, and since the arrangement provides for housing of filtering surfaces, there is little liability of damage to the surfaces during handling or in use.

The arrangement is such as to permit its production in comparatively large sizes. For instance, in practice, the screen 18 has an exposed diameterof approximately three and one half inches, with the result that a large surface exposure is had permitting continued use for extended periods without cleansing, and making it possible to produce a practically standard size for most of the size motors now in general service. In addition, the structure is compact and of a configuration notliable to damage or accumulation of external accretions, since there is an absence of nooks and corners which could serve as collecting points and which would tend to permit dripping into the interior when the unit Z) is removed.

While I have herein shown and described a pref rred arrangement and construction, it will be read; y understood that changes or modifications therein may be found desirable or essential in meeting the various exigencies of use, and I desire to be understood as eserving the right to make any and all such changes or modifications as may be found desirable or ne essary in so far as the same may fall within the spirit and scope of the invention as expressed in the accompanying claims when broadly construed.

flay g thus described my invention, what i claim as new is: i

l; In means for filtering gasoline, a caring having an. end-wall adapted to extend in an approximately vertical plane and hav ing its opposite end open with the plane'of the open end inclined to such end wall, and with the direction of increase in distance between such planes extending toward the bottom of the casing, and a removable unit mounted within and closing such open end, said end wall and said unit respectively carrying the inlet outlet for gasoline, said unit carrying successive filter media between such inlet and outlet with the several media extending in spaced-apart planes substantially parallel to the plane of the casing open end.

2. In means for filtering gasoline, a caslOO ing having an end wall adapted to extend in an approximately vertical plane and having its opposite end open with the plane of the open end inclined to such end wall, said open end having its walls of substantially circular contour with the interior threaded, the direction of increase in distance between the planes of the end wall and of such open end extending toward the bottom of the casing, whereby the axis of such open end is inclined to the horizontal with the direction of inclination leading away from such end wall, and a removable unit threaded into and closing said open end, said end wall and unit respectively carrying the inlet and outlet for the gasoline, said unit carrying successive filter media between said inlet and outlet with the several media extending in spaced apart planes substantially parallel to the plane of such open end of the casing.

3. Means as in claim 2 characterized in that the inlet is located adjacent the top of the chamber which is in advance of the filter media with the lower portion of the chamber forming a drainage pocket having a controllable outlet.

4. In means for filtering gasoline, a casing having an open end, a removable closure unit for such open end, said closure unit having an annular fian e extending into the casing and carrying a seat-for a removable filter unit, whereby the filter unit is bodily removable with the closure unit, and means carried by the closure unit for clamping the filter unit to its seat, said casing carrying the inlet. and said closure unit the outlet for the gasoline, said closure unit being positioned to locate the filter unit as an inclined wall of a receiving chamber for the unfiltered gasoline with the chamber decreasing in width toward its upper end;

5. In means for filtering gasoline, a device formed or an assembly of units arranged to locate a succession oi filter media between the inlet and outlet for the gasoline into and out of the device, said assembly comprisinga casing, a detachable closure unit and a filter unit, said filter unit being carried by the closure unit and detachable bodily there- .trom when the closure unit is removed from thecasing, saidunits having their axes in clined to the horizontal. when in the assembly position, whereby the filter media will I extend in planes inclined to the vertical, the

direction of inclination of such media planes locating the bottoms of the media an increased distance from the vertical plane of the casing 'as compared to that of the tops of the media;

6. In means for filtering gasoline, a device formed oi an assembly of units arranged to locate a succession of media varying as to filtering characteristic between theainlet and outlet for the gasoline into and out of the device, said assembly comprising casing, a closure" unit and a filter unit, said closure and filter units having corresponding-axes and positionable relative to the casing with the axes inclined to the horizontal to place the planes of the respective media inclined to the vertical, said-closure unit forming the solesupport ofthefilter unit, the latter unit being bodily removable from the closure unit when the latter is removed from the casing.

7. in means for filtering gasoline V and wherein the means is formed of. an assembly or elements arranged tolocate a succession of filter media within the device between the soline inlet and outlet thereof, and where in the assembly includes an open-ended cupshaped casingv into which thejgasoline is deliver-ed, a combined closureand media-oarrying unit detachably engaging the casing with the unit axis located to position the media in planes inclined to the vertical toward the bottonrof the casing, the gasoline outlet being carried by the closure and having its axis extending normal to the-media planes.

In testimony whereof, I have affixed my signature in the presence of twowitnesses.

' HUGH Ar DEEK-S. Witnesses I I O. F. BARTHIEL,

KARL H; BUTLER. 

